Hitachi EP-A7000 Air Cleaner User Manual


 
E-25
Troubleshooting Guide
Smoke or smell
is not efficiently
removed, or
there is an odor
No remote
operation
Symptom Solution
Before asking for repair
check the following once again
Securely insert the power plug into AC
outlet.
No air blows out
or power does
not turn on
Is power plug securely inserted
into AC outlet?
Switch on breaker.
Is breaker switched off?
Is the pre-filter dirty?
Is the filter dirty?
Clean the pre-filter, referring to the “Pre-
filter” in “Cleaning”.
Are batteries dead?
Is the remote infrared receiver
dirty?
Replace the batteries.
Clean the remote infrared receiver.
Insert the batteries with correct
polarities.
Are polarities of batteries
correct?
Replace the filter, referring to the “Filter
Replacement”. The filter may need to be
replaced sooner depending on the place of
installation and conditions of use.
Check to see
P.
E-21
Airflow rate
does not
increase even
though the air is
contaminated
“Air Sensor” indicator
is kept constantly lit
in green
Is odor sensor hole blocked by
dust or other obstacle?
Clean the odor sensor.
Was the ambient air clean when
the purifier power cord was
plugged into AC outlet?
Change the airflow rate. Or open a window
and plug the power cord into AC outlet
when ambient air is clean.
Is the purifier installed in a place
out of reach of odor or dust?
Relocate the air purifier.
Is the operation in the
“Humidify” mode?
Airflow rate will not decrease when humidity
is low.
Is airflow rate switched?
Press the airflow button and select Auto
Sensor or other airflow rate.
Airflow rate
does not
decrease even
though the air is
clean
Is sensor sensitivity high?
Change the sensor sensitivity
setting.
Is airflow rate switched?
Press the airflow button and select Auto
Sensor or other airflow rate.
Is odor sensor hole blocked by
dust or other obstacle?
Clean the odor sensor.
Is sensor sensitivity low?
Change the sensor sensitivity
setting.
P.
E-9
P.
E-9
P.
E-22
P.
E-16
P.
E-
11
-E-
14
P.
E-22
P.
E-16
P.
E-15
P.
E-22
P.
E-
23
Alert Display
Symptom
Cause
All airflow indicators are blinking. Faulty fan rotation.
Stop the operation, unplug the power cord from AC outlet and contact your dealer for service.
Is the dust sensor covered with
dust?
Clean the dust sensor.
Is odor sensor hole blocked by
dust or other obstacle?
Clean the odor sensor.
P.
E-22
“Air Sensor”
indicator is kept
blinking in green.
Filter Replacement Alert Display Troubleshooting Guide
P.
E-
11
,E-
14
T_S-EP-A7000.indd 25T_S-EP-A7000.indd 25 12/7/2011 2:48:10 PM12/7/2011 2:48:10 PM